Language:
كتاب الرقاق
81  
To make the Heart Tender (Ar-Riqaq)
(53)
Chapter: Regarding Al-Haud
(53)
باب فِي الْحَوْضِ
Sahih al-Bukhari 6584
Abu Hazim added:
An-Nu`man bin Abi `Aiyash, on hearing me, said. "Did you hear this from Sahl?" I said, "Yes." He said, " I bear witness that I heard Abu Sa`id Al-Khudri saying the same, adding that the Prophet (ﷺ) said: 'I will say: They are of me (i.e. my followers). It will be said, 'You do not know what they innovated (new things) in the religion after you left'. I will say, 'Far removed, far removed (from mercy), those who changed (their religion) after me."
قَالَ أَبُو حَازِمٍ فَسَمِعَنِي النُّعْمَانُ بْنُ أَبِي عَيَّاشٍ، فَقَالَ هَكَذَا سَمِعْتَ مِنْ، سَهْلٍ فَقُلْتُ نَعَمْ‏.‏ فَقَالَ أَشْهَدُ عَلَى أَبِي سَعِيدٍ الْخُدْرِيِّ لَسَمِعْتُهُ وَهْوَ يَزِيدُ فِيهَا ‏ "‏ فَأَقُولُ إِنَّهُمْ مِنِّي‏.‏ فَيُقَالُ إِنَّكَ لاَ تَدْرِي مَا أَحْدَثُوا بَعْدَكَ‏.‏ فَأَقُولُ سُحْقًا سُحْقًا لِمَنْ غَيَّرَ بَعْدِي ‏"‏‏.‏ وَقَالَ ابْنُ عَبَّاسٍ سُحْقًا بُعْدًا، يُقَالُ سَحِيقٌ بَعِيدٌ، وَأَسْحَقَهُ أَبْعَدَهُ‏.‏
Reference : Sahih al-Bukhari 6584
In-book reference : Book 81, Hadith 172
USC-MSA web (English) reference : Vol. 8, Book 76, Hadith 585
  (deprecated numbering scheme)